John 1:1c

I'm not sure what your level of understanding is regarding John 1:1c,
however, I believe that the following book may be of help to you.
It gives a good scholarly overview of that passage.

Jehovah's Witnesses, Jesus Christ, and the Gospel of John,
by Robert M. Bowman, Jr. 
(Baker Book House).

It decimates the mistranslation by the WatchTower, and as I stated,
it gives some good scholarly insight as well.
You should be able to special order it from any Christian book store.